In reply to Rhetorica:
I think the most concise and precise I've managed to be
concerning Legato's seminal nature is my mini-review of
2004, quoted here: http://typophile.com/node/55783
(The non-italicized second paragraph
is actually part of the review.)
It's possible that focusing on single fonts is misleading.
Focusing on genres is better; so for example I would concede
that the genre of Sans is probably culturally more significant
than Legato. However: is there a single Sans font that can take
most of the credit? And consider how significant a Legato genre
would be...
So, if we do choose to focus on individual typefaces, exactly
what font is more significant, culturally? Ideal Sans? Charming.
A workhorse. But a mere blip on the cultural radar.
All that said, nobody should think in terms of THE or "perfect".
hhp